William thompson



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'Latem Pannzvo. 79,877, dateqzvuzy 14, 186e,

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To WHOM IT MAY CONGERN:

Be it known that I, WILLIAM THOMPSON, of the city-and county of Worces ter, and State of Massachusetts, have invented new and useful Improvements in.Eugine-Turning-Lathe.Rests; and I do hereby declare that the 'following is a full, clear, and exact description of' the same, reference being had to the annexed drawings,

making a part of this` specification, the-same'letters-in the several figures denoting the same part.

Figure lis a. perspective view oi' a llathe-bed with the .rest and Vpoppethlocl Figure v2-is a sectional longitudinal view of the rest 'through the screw-chamber.

Figure 3 is a transverse section of the rest .cut through ,the poppet-block.

A is the lathe-bed.

lB 'is the sliding rest. l

C is the poppet-block, which slides Aupon the rest B.

D is the crank of the screw which moves the block C. Y

E is the nut in which the screw-operates, and is attached tothepoppebblock C at b. l y I a is a slot, throughthe side of the rest B to the screw-chamber F, through which the arm of the nut E passes to connect with the poppet-block. A

Gis an opening in the' under side of the rest- B, to admit'the mit E into the chainher F. 4

H is a slot in the under side ofithe restB, to allow all dirt to escape from the screw-chamber F.

"The advantage of *attaching .the nut E to the puppet-block C through the side of the rest B, instead of through the top,'as isA usually done, is, it avoids the vast amountof dirt and chips with which the screw-chamber` is usually 1led,' and the consequent rapid` wear"of the screw That which I claim as my invention, and `desire to Asecure' by Letters Patent, is-

Connecting the nut E to the poppet-block C by means of a. screw passing through a slot in the side of the rest.B,in the manner herein described.'`

' WILLIAM THOMPSON.

Witnesses:

WM'. 'GREENLEAF, LEONARD WARE. 

